CN113813008A - Bone taking and grafting device for femoral medullary hole opening - Google Patents
Bone taking and grafting device for femoral medullary hole opening Download PDFInfo
- Publication number
- CN113813008A CN113813008A CN202111234159.6A CN202111234159A CN113813008A CN 113813008 A CN113813008 A CN 113813008A CN 202111234159 A CN202111234159 A CN 202111234159A CN 113813008 A CN113813008 A CN 113813008A
- Authority
- CN
- China
- Prior art keywords
- bone
- sleeve
- taking
- hollow sleeve
- beating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1604—Chisels; Rongeurs; Punches; Stamps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1695—Trepans or craniotomes, i.e. specially adapted for drilling thin bones such as the skull
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/461—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of knees
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2002/4681—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor by applying mechanical shocks, e.g. by hammering
Abstract
The invention relates to a bone taking and grafting device for opening a medullary hole of a femur, which comprises an outer bone taking sleeve and an inner bone taking device, wherein the outer bone taking sleeve is a hollow sleeve, and a bone taking trephine is arranged at the head end of the hollow sleeve; the inner layer beater is a solid columnar beater, and the head end of the solid columnar beater is a planar beater head; the outer bone taking sleeve is used for taking bones and storing the taken bone blocks in the hollow sleeve; the solid cylindrical driver has a diameter that matches the diameter of the hollow sleeve so that the solid cylindrical driver can be inserted into the hollow sleeve and drive bone pieces retained in the hollow sleeve into the femoral medullary canal during insertion into the hollow sleeve. The bone taking and implanting device has the functions of bone taking and bone implanting, can smoothly and quickly complete the operation of bone taking and bone implanting, realizes good bony filling of the femoral medullary hole, saves the time for trimming and splicing bone blocks, and has convenient operation and high practicability; the adopted tools are simple and convenient, and are convenient to carry and disinfect.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a bone taking and grafting device for a femoral medullary hole.
Background
In total knee replacement, in order to determine the bone cutting force line of the distal femur, the distal femur is subjected to marrow opening, namely, the cortex above the intercondylar notch of the distal femur is drilled by an electric drill, a force line rod is inserted, and the distal femur is cut by adopting an intramedullary positioning mode. The open medullary canal is generally larger for the stability of the force wire rod, but the open femoral medullary cavity can cause obvious blood loss after operation, so the open medullary canal is generally closed after the placement of the knee joint prosthesis is completed, and excessive medullary cavity blood is prevented from flowing out of the open medullary canal.
Currently, when the femoral medullary hole is closed in operation, two methods are generally used, namely bone block closing and bone cement closing.
First, the bone block is closed. The bone (mostly, femur) cut from femur or tibia is trimmed and spliced into a circular or quadrangular bone block with a proper size, and the circular or quadrangular bone block is driven into the medullary opening.
Second, bone cement encapsulation. After the prosthesis is placed, the redundant bone cement is made into a block shape and is plugged into the femoral medullary hole, and the femoral medullary hole is closed along with the hardening of the bone cement.
Both methods in the prior art can seal the femoral medullary hole, but have the following disadvantages:
the first method of bone block closure is not good for mastering the size of the prepared bone block, and is not enough for closing the open medullary hole if the prepared bone block is too small, and is inconvenient for filling if the prepared bone block is too large. More importantly, the method requires additional time for trimming and splicing the cut bone pieces, prolongs the operation time and wastes the energy of the operator.
The second method of bone cement sealing, although solving the above problems of shaping and preparation time, is a foreign body, and cannot seal the medullary hole, which may cause local bone loss in the future revision surgery, and once the bone cement falls into the joint cavity, it must be removed again by surgery.
Two methods are currently used clinically, with the first bone block closure method being the most common.
Disclosure of Invention
The invention aims to provide a bone taking and grafting device for a femoral medullary hole, and aims to solve the technical problems of how to more simply and efficiently perform bone closure on the femoral medullary hole, reduce the operation time and improve the operation fluency.
The invention aims to solve the defects of the prior art and provides a bone taking and grafting device for opening a medullary hole of a femur, which comprises an outer layer bone taking sleeve and an inner layer bone taking device, wherein the outer layer bone taking sleeve is a hollow sleeve, and the head end of the hollow sleeve is provided with a bone taking trephine; the inner layer beater is a solid columnar beater, and the head end of the solid columnar beater is a planar beater head; the outer bone taking sleeve is used for taking bones and storing the taken bone blocks in the hollow sleeve; the diameter of the solid columnar driver is matched with that of the hollow sleeve, so that the solid columnar driver can be inserted into the hollow sleeve, and the bone blocks stored in the hollow sleeve are driven into the femoral medullary hole in the process of being inserted into the hollow sleeve.
Preferably, the outer bone taking sleeve is a hollow metal sleeve.
Preferably, the solid columnar beater is a solid metal beater.
Further preferably, the outer bone taking sleeve further comprises a striking plate for striking, and the striking plate is fixedly arranged at the tail end of the outer bone taking sleeve.
Preferably, the striking plate is a circular plate or a polygonal plate, and a through hole is further formed in the striking plate and is communicated with the hollow sleeve, so that the solid columnar striking device can be inserted into the hollow sleeve through the through hole.
Further preferably, the outer bone taking sleeve further comprises a handheld area, and the handheld area is an area where a structure for increasing friction force is arranged on the outer peripheral wall of the outer bone taking sleeve, so that the outer bone taking sleeve is convenient to grasp and hold.
Preferably, the friction-increasing structure is a thread, a tread structure and/or a granular structure.
Further preferably, the outer peripheral wall of the outer bone taking sleeve is also provided with an observation window for observing the taken bone blocks and the inner bone beating device inserted into the hollow sleeve.
Preferably, a beater beating disc is fixedly arranged at the tail end of the inner beater, the beater beating disc is a circular disc, and the diameter of the beater beating disc is larger than the inner diameter of the outer bone taking sleeve, so that the inner beater is prevented from being completely knocked into the outer bone taking sleeve during knocking.
Further preferably, the length of the inner-layer bone taking sleeve except for the striking plate of the tail end of the inner-layer bone taking sleeve is equal to the length of the whole outer-layer bone taking sleeve including the striking plate.
Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
the bone taking and implanting device for the femoral medullary hole has the functions of bone taking and bone implanting, can smoothly and quickly complete the operation of bone taking and bone implanting, realizes good bony filling of the femoral medullary hole, saves the time for trimming and splicing bone blocks, and has convenient operation and high practicability. The tool has simple structure, and is convenient to carry and sterilize.
In addition, in the knee joint replacement in the prior art, the tibial prosthesis is provided with a long or short base, called a prosthesis handle, for stably placing the tibial prosthesis on a tibial platform, the tibial platform is processed in an operation, so that the prosthesis handle can be placed in the tibial prosthesis handle, generally, an electric drill is used for drilling a conical hole on the tibial platform according to the size of the prosthesis handle, and the electric drill wastes the part of cancellous bone. The bone taken out by the bone taking sleeve is actually the part drilled away by the electric drill. That is, the cancellous bone that the invention uses and fetches the sleeve of bone is gone on in the opening marrow of tibial plateau promptly, neither cause the extra bone to lose, but also utilize autologous bone.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Figure 1 is a front view of an outer bone harvesting sleeve according to the present invention.
Figure 2 is a top view of an outer bone harvesting sleeve according to the present invention.
FIG. 3 is a front view of the inner beater of the present invention.
FIG. 4 is a top view of the inner beater of the present invention.
FIG. 5 is a schematic view of the inner punch inserted into the outer bone removal sleeve according to the present invention.
Detailed Description
The present invention is described in more detail below to facilitate an understanding of the present invention.
As shown in fig. 1 to 5, the bone taking and grafting device for opening the medullary hole of femur of the invention comprises an outer bone taking sleeve and an inner bone taking device, wherein the outer bone taking sleeve is a hollow sleeve, and a bone taking trephine 3 is arranged at the head end of the hollow sleeve; the inner layer beater is a solid columnar beater 7, and the head end of the solid columnar beater 7 is a planar beater head; the outer bone taking sleeve is used for taking bones and storing the taken bone blocks in the hollow sleeve; the diameter of the solid cylindrical driver 7 is matched with that of the hollow sleeve (namely, the diameter of the solid cylindrical driver 7 is slightly smaller than that of the hollow sleeve), so that the solid cylindrical driver 7 can be inserted into the hollow sleeve and drives the bone blocks stored in the hollow sleeve into the femoral medullary hole in the process of inserting the hollow sleeve.
Preferably, the outer bone taking sleeve is a hollow metal sleeve.
Preferably, the solid cylindrical beater 7 is a solid metal beater.
Further preferably, the outer bone taking sleeve further comprises a striking plate 1 for striking, and the striking plate 1 is fixedly arranged at the tail end of the outer bone taking sleeve.
Preferably, the striking plate 1 is a circular plate or a polygonal plate, and a through hole 5 is further formed in the striking plate, and the through hole 5 is communicated with the hollow sleeve, so that the solid cylindrical striking device can be inserted into the hollow sleeve through the through hole 5.
Further preferably, the outer bone taking sleeve further comprises a handheld area 2, and the handheld area is an area where a structure for increasing friction force is arranged on the outer peripheral wall of the outer bone taking sleeve, so that the outer bone taking sleeve is convenient to grasp and hold.
Preferably, the friction-increasing structure is a thread, a tread structure and/or a granular structure.
Further preferably, the outer circumference wall of the outer bone taking sleeve is also provided with an observation window 4 for observing the removed bone blocks and the inner bone beating device inserted into the hollow sleeve.
Preferably, a beater beating disk 6 is fixedly arranged at the tail end of the inner beater, the beater beating disk 6 is a circular disk, and the diameter of the beater beating disk 6 is larger than the inner diameter of the outer bone taking sleeve, so that the inner beater is prevented from being completely knocked into the outer bone taking sleeve during knocking.
Further preferably, the length B of the inner-layer bone taking sleeve except the striking plate 6 of the tail end of the inner-layer bone taking sleeve is equal to the length A of the whole outer-layer bone taking sleeve including the striking plate 1.
In the bone taking and grafting device for the femoral medullary hole, the outer layer bone taking sleeve is mainly used for taking bones and is used as the sleeve of the inner layer device, and the inner layer device is mainly used for driving bone blocks into the femoral medullary hole.
When getting the bone, get bone sleeve independent perpendicular to tibial plateau center with the skin, through hitting the dish 1 of beating of hitting with the hammer hitting the tail end, will get bone sleeve and squeeze into tibial plateau center cancellous bone, stop after squeezing into certain degree of depth, extract the sleeve, get bone sleeve's front end and can save and take out a columniform cancellous bone promptly to the realization is got the bone.
In knee joint replacement, the tibial prosthesis is provided with a long or short base, called as a prosthetic handle, for being stably placed on a tibial platform, the tibial platform is processed in an operation, so that the prosthetic handle can be placed in, generally, an electric drill is used for drilling a conical hole on the tibial platform according to the size of the prosthetic handle, and the part of cancellous bone is wasted along with the electric drill. The bone taken out by the outer bone taking sleeve is actually the part drilled away by the electric drill. That is, the spongy bone taken by the invention is taken at the medullary opening position of the tibial plateau, so that the cancellous bone can not cause additional bone loss, and the autogenous bone is utilized.
When the bone grafting is carried out, the outer layer bone taking sleeve with the head end containing the bone blocks is abutted against the femur to open the medullary hole, then the inner layer beating device is inserted from the tail end (namely the through hole 5) of the outer layer bone taking sleeve, the beating device beating disc of the tail end of the inner layer beating device is knocked by using a hammer, the head end of the inner layer beating device can be beaten into the femur to open the medullary hole along with the beating of the tail end until the tail end (namely the beating device beating disc 6) of the inner layer beating device touches the tail end (namely the beating disc 1) of the outer layer sleeve, and at the moment, the bone blocks are completely beaten into the medullary hole to complete the bone grafting.
The femoral medullary hole opening bone taking and implanting device used in knee joint replacement has the functions of bone taking and implanting, can smoothly and quickly complete the operation of bone taking and implanting, realizes good bony filling of the femoral medullary hole, saves the time for trimming and splicing bone blocks, and has convenient operation and high practicability. The tool used by the bone grafting device for taking the bone from the femoral medullary hole is simple and convenient, and is convenient to carry and sterilize.
The foregoing describes preferred embodiments of the present invention, but is not intended to limit the invention thereto. Modifications and variations of the embodiments disclosed herein may be made by those skilled in the art without departing from the scope and spirit of the invention.
Claims (10)
1. The bone taking and implanting device for the femoral medullary hole is characterized by comprising an outer layer bone taking sleeve and an inner layer bone taking device, wherein the outer layer bone taking sleeve is a hollow sleeve, and a bone taking trephine is arranged at the head end of the hollow sleeve; the inner layer beater is a solid columnar beater, and the head end of the solid columnar beater is a planar beater head; the outer bone taking sleeve is used for taking bones and storing the taken bone blocks in the hollow sleeve; the diameter of the solid columnar driver is matched with that of the hollow sleeve, so that the solid columnar driver can be inserted into the hollow sleeve, and the bone blocks stored in the hollow sleeve are driven into the femoral medullary hole in the process of being inserted into the hollow sleeve.
2. The bone grafting and taking device for femoral medullary hole of claim 1, wherein the outer bone taking sleeve is a hollow metal sleeve.
3. The bone grafting and fetching device for femoral medullary hole of claim 1, wherein the solid cylindrical driver is a solid metal driver.
4. The femoral intramedullary canal harvesting reamer of claim 1, wherein the outer harvesting sleeve further comprises a striking plate for striking, the striking plate being fixedly disposed at the end of the trailing end of the outer harvesting sleeve.
5. The bone grafting and fetching device for femoral medullary canal of claim 4, wherein the striking plate is a circular plate or a polygonal plate, and the striking plate is further provided with a through hole which is communicated with the hollow sleeve, so that the solid column-shaped striking device can be inserted into the hollow sleeve through the through hole.
6. The bone grafting and taking device for femoral medullary hole of claim 1, wherein the outer bone taking sleeve further comprises a holding area, and the holding area is an area for arranging a friction-increasing structure on the outer circumferential wall of the outer bone taking sleeve to facilitate grasping and holding.
7. The bone grafting and taking device for femoral medullary hole of claim 6, wherein the structure for increasing friction force is a thread, a pattern structure and/or a granular structure.
8. The bone grafting and taking device for femoral medullary hole of claim 1, wherein the outer circumference of the outer bone taking sleeve is further provided with a viewing window for viewing the removed bone pieces and the inner bone grafting device inserted into the hollow sleeve.
9. The bone grafting and fetching device for femoral medullary hole of claim 1, wherein the tail end of the inner layer beating device is fixedly provided with a beating device beating disc, the beating device beating disc is a circular disc, and the diameter of the beating device beating disc is larger than the inner diameter of the outer layer bone fetching sleeve so as to prevent the inner layer beating device from being completely beaten into the outer layer bone fetching sleeve during beating.
10. The bone grafting and fetching device for femoral medullary canal of claim 4, wherein the length of the inner layer beating device except the beating disk of the tail end is equal to the length of the whole outer layer bone fetching sleeve containing the beating disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111234159.6A CN113813008A (en) | 2021-10-22 | 2021-10-22 | Bone taking and grafting device for femoral medullary hole opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111234159.6A CN113813008A (en) | 2021-10-22 | 2021-10-22 | Bone taking and grafting device for femoral medullary hole opening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113813008A true CN113813008A (en) | 2021-12-21 |
Family
ID=78917214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111234159.6A Pending CN113813008A (en) | 2021-10-22 | 2021-10-22 | Bone taking and grafting device for femoral medullary hole opening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113813008A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200948146Y (en) * | 2006-09-27 | 2007-09-19 | 四川大学华西医院 | Surgery appliance for reducing pressure of ischemic necrosis core of femoral head |
| US20120265319A1 (en) * | 2011-04-13 | 2012-10-18 | Total Joint Orthopedics | Total hip arthroplasty |
| CN206355099U (en) * | 2016-08-31 | 2017-07-28 | 商冠宁 | A kind of ilium micro-wound bone taking device |
| CN208784900U (en) * | 2017-11-07 | 2019-04-26 | 北京天智航医疗科技股份有限公司 | A kind of impaction bone grafting tool |
| CN213310090U (en) * | 2020-08-12 | 2021-06-01 | 中国人民解放军联勤保障部队第九八〇医院 | Bone taking and grafting chisel |
-
2021
- 2021-10-22 CN CN202111234159.6A patent/CN113813008A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200948146Y (en) * | 2006-09-27 | 2007-09-19 | 四川大学华西医院 | Surgery appliance for reducing pressure of ischemic necrosis core of femoral head |
| US20120265319A1 (en) * | 2011-04-13 | 2012-10-18 | Total Joint Orthopedics | Total hip arthroplasty |
| CN206355099U (en) * | 2016-08-31 | 2017-07-28 | 商冠宁 | A kind of ilium micro-wound bone taking device |
| CN208784900U (en) * | 2017-11-07 | 2019-04-26 | 北京天智航医疗科技股份有限公司 | A kind of impaction bone grafting tool |
| CN213310090U (en) * | 2020-08-12 | 2021-06-01 | 中国人民解放军联勤保障部队第九八〇医院 | Bone taking and grafting chisel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5265577B2 (en) | A tool for orienting a tool, particularly useful as a surgical tool for harvesting and implanting bone plugs to repair damaged bone tissue | |
| US8486074B2 (en) | Surgical allograft bone plug cutting tool assembly and method of using same | |
| US6591581B2 (en) | Method for preparing and inserting round, size specific osteochondral cores in the knee | |
| US8523864B2 (en) | Instrumentation for the preparation and transplantation of osteochondral allografts | |
| JP4397622B2 (en) | Graft fixation device | |
| JP3932496B2 (en) | Device for osteochondral transplantation | |
| US7862567B2 (en) | Retrodrill technique for insertion of autograft, allograft or synthetic osteochondral implants | |
| US8357163B2 (en) | Low cost modular tapered and spherical hollow reamers for medical applications | |
| US20090299371A1 (en) | Surgical bone cutting assembly and method of using same | |
| RU2594812C2 (en) | Trephine | |
| US20100256645A1 (en) | Dovetail method of allograft transplantation | |
| US11759335B2 (en) | Engineered sterile cartilage allograft implant plug with sterile, specific instrument kit(s) | |
| WO2009045546A1 (en) | Modular tapered hollow reamer for medical applications | |
| US20070293867A1 (en) | Method and Tools for Low-Speed Milling Without Irrigation and with Extraction and Recovery of Tissue Particles | |
| JP2018525118A (en) | Surgical tray, instrument, and method for implanting a hip replacement | |
| WO2013012503A1 (en) | Surgical kit and method for bone repair | |
| CN110115611B (en) | Surgical tool for femoral head necrosis bone grafting | |
| US20030236525A1 (en) | Prosthesis removal cutting guide, cutting tool and method | |
| CN113813008A (en) | Bone taking and grafting device for femoral medullary hole opening | |
| US20230138945A1 (en) | Engineered sterile cartilage implant plug(s) with sterile, specific instrument kit(s) | |
| CN110226971A (en) | A kind of operation tool packet for caput femoris necrosis bone grafting | |
| KR20150003639U (en) | Autogenous bone harvesting device for dental implant | |
| CN210872063U (en) | Operation tool kit for femoral head necrosis bone transplantation | |
| JP2022532361A (en) | Bone punches and methods for forming bone tunnels | |
| CN110179521B (en) | Combined bone taking device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |